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AP Physics 2
13.2 Images Formed by Mirrors
13.1 Reflection
AdvancedMCQGraphicalMathematicalConceptual20.7k
A two-dimensional Cartesian diagram showing two perpendicular mirror surfaces along the axes. A thick horizontal line segment along the positive x-axis represents Mirror 1, meeting at the origin (0,0) with a thick vertical line segment along the positive y-axis representing Mirror 2. A tick mark on the x-axis at distance d from the origin is labeled d. A vertical dashed line extends upward from x = d parallel to the y-axis, representing the normal to Mirror 1. A single straight arrow representing an incoming light ray points downward and to the left, terminating at the x-axis at x = d. An arc indicating the angle theta is drawn between the incoming ray arrow and the vertical dashed normal line, labeled \theta. No other labels, lines, text, or axes appear.
Diagram of a light ray incident on Mirror 1 at distance \(d\) from the origin.
Two flat plane mirrors are mounted perpendicular to each other, with Mirror 1 along the positive \(x\)-axis and Mirror 2 along the positive \(y\)-axis. A narrow light ray propagating in the \(xy\)-plane strikes Mirror 1 at a distance \(d\) from the origin with an angle of incidence \(\theta\) relative to the normal of Mirror 1, where \(0 < \theta < 90^\circ\). After reflecting off Mirror 1, the ray travels through air and strikes Mirror 2. Which of the following expressions correctly gives the straight-line distance \(s\) traveled by the light ray between its reflection point on Mirror 1 and its reflection point on Mirror 2, along with the angle of incidence \(\theta_2\) of the ray at Mirror 2?

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